HMD-A400 - Sony Audio Service Manual (repair manual)

Model
HMD-A400
Pages
67
Size
2.63 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / S/M HMD-A400 01 US CAN
File
hmd-a400.pdf
Date

View Sony HMD-A400 Service Manual online

SERVICE MANUAL
SPECIFICATIONS
CHASSIS
US Model
Canadian Model
Chassis No. SCC-L35A-A
TRINITRON
®
 COLOR COMPUTER DISPLAY
HMD-A400
CRT
0.24 mm aperture grille pitch (center) 
19 inches measured diagonally 
90-degree deflection
FD Trinitron
Viewable image size
Approx. 365 
×
 274 mm (w/h) 
(14 
3
/
8
  
×
 10 
7
/
8
 inches) 
18.0" viewing image
Resolution
Maximum
Horizontal: 1600 dots 
Vertical: 1200 lines
Recommended
Horizontal: 1280 dots 
Vertical: 1024 lines
Standard image area
Approx. 352 
×
 264 mm (w/h) 
(13 
7
/
8
  
×
 10 
1
/
2
 inches)
Deflection frequency*
Horizontal: 30 to 86 kHz
Vertical: 48 to 120 Hz
AC input voltage/current  100 – 120 V, 50 – 60 Hz, 2.3 A
Power consumption
Max. 150 W
Dimensions
Approx. 497 
×
 458 
×
 469 mm 
(w/h/d) 
(19 
5
/
8
 
×
 18 
1
/
8
 
×
 18 
1
/
2
 inches)
Mass
Approx. 26 kg (57 lb 5 oz)
Plug and Play
DDC2B/DDC2Bi
* Recommended horizontal and vertical timing condition
• Horizontal sync width should be more than 1.0 
µ
sec.
• Horizontal blanking width should be more than 3.0 
µ
sec.
• Vertical blanking width should be more than 500 
µ
sec.
Design and specifications are subject to change without notice.
H1
HMD-A400
– 2 –
LEAKAGE  TEST
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part hav-
ing a return to chassis, must not exceed 0.5 mA (500
microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers’ instructions to
use these instruments.
2. A battery-operated AC milliammeter. The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are
examples of a passive VOMs that are suitable. Nearly all
battery operated digital multimeters that have a 2 V AC
range are suitable.  (See Fig. A)
WARNING!!
NEVER TURN ON THE POWER IN A CONDITION IN
WHICH THE DEGAUSS COIL HAS BEEN REMOVED.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
0
 ON THE SCHEMATIC DIAGRAMS, EXPLODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR
SAFE OPERATION. REPLACE THESE COMPONENTS
WITH SONY PARTS WHOSE PART NUMBERS AP-
PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY. CIRCUIT ADJUST-
MENTS THAT ARE CRITICAL FOR SAFE OPERATION
ARE IDENTIFIED IN THIS MANUAL. FOLLOW THESE
PROCEDURES WHENEVER CRITICAL COMPONENTS
ARE REPLACED OR IMPROPER OPERATION IS SUS-
PECTED.
AVERTISSEMENT!!
NE JAMAIS METTRE SOUS TENSION QUAND LA
BOBINE DE DEMAGNETISATION EST ENLEVÉE.
ATTENTION AUX COMPOSANTS RELATIFS À LA
SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET
UNE MARQUE 
0
 SONT CRITIQUES POUR LA SÉCURITÉ.
NE LES REMPLACER QUE PAR UNE PIÈCE PORTANT LE
NUMÉRO SPECIFIÉ.  LES RÉGLAGES DE CIRCUIT DONT
L’IMPORTANCE EST CRITIQUE POUR LA SÉCURITÉ DU
FONCTIONNEMENT SONT IDENTIFIÉS DANS LE
PRÉSENT MANUEL.  SUIVRE CES PROCÉDURES LORS
DE CHAQUE REMPLACEMENT  DE COMPOSANTS CRI-
TIQUES, OU LORSQU’UN MAUVAIS FONCTIONNEMENT
EST SUSPECTÉ.
After correcting the original service problem, perform the fol-
lowing safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly-sol-
dered connections. Check the entire board surface for solder
splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
“pinched” or contact high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps,
and mounting hardware have been replaced. Be absolutely
certain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly tran-
sistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer and
recommend their replacement.
6. Check the line cords for cracks and abrasion. Recommend
the replacement of any such line cord to the customer.
7. Check the B+ and HV to see if they are specified values.
Make sure your instruments are accurate; be suspicious of
your HV meter if sets always have low HV.
8. Check the antenna terminals, metal trim, “metallized”
knobs, screws, and all other exposed metal parts for AC
Leakage. Check leakage as described below.
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY  CHECK-OUT
1.5 k
0.15 
µ
F
AC
Voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
HMD-A400
– 3 –
POWER  SAVING  FUNCTION
DIAGNOSIS
This monitor meets the power-saving guidelines set by VESA, 
E
NERGY 
S
TAR, and NUTEK. If no signal is received by the 
monitor from the connected computer, the monitor will 
automatically reduce power consumption as shown below.
*
Figures reflect power consumption when no USB compatible 
peripherals are connected to the monitor.
** When your computer enters the “active off” mode, the input signal is 
cut and NO INPUT SIGNAL appears on the screen. After 20 seconds, 
the monitor enters the power saving mode.
Power mode
Power 
consumption
*
!
 (power) 
indicator
normal 
operation
 150 W
green
active off**
 3 W
orange
power off
0 W
off
Failre
HV or +B failure or Hstop
Vstop
ABL protector
Aging / Self Test
Power LED
Orange
Off
(0.5 sec)
(0.5 sec)
Orange
Off
(1.5 sec)
(0.5 sec)
Orange
Off
(0.5 sec)
(1.5 sec)
Orange
Off
Green
Off
(0.5 sec)
(0.5 sec)
(0.5 sec)
(0.5 sec)
Self Test (OSD Color Bar)
: During Power Save, press “CONT” (
,) key for longer than 2 second.
HMD-A400
– 4 –
TIMING  SPECIFICATION
MODE AT PRODUCTION
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
RESOLUTION
640 X 480
640 X 480
720 X 400
800 X 600
832 X 624
CLOCK
25.175 MHz
36.000 MHz
28.321 MHz
56.250 MHz
57.283 MHz
— HORIZONTAL —
H-FREQ
31.469 kHz
43.269 kHz
31.468 kHz
53.674 kHz
49.725 kHz
usec
usec
usec
usec
usec
H. TOTAL
31.778
23.111
31.779
18.631
20.111
H. BLK
6.356
5.333
6.356
4.409
5.586
H. FP
0.636
1.556
0.636
0.569
0.559
H. SYNC
3.813
1.556
3.813
1.138
1.117
H. BP
1.907
2.222
1.907
2.702
3.910
H. ACTIV
25.422
17.778
25.423
14.222
14.524
— VERTICAL —
V. FREQ(HZ)
59.940 Hz
85.008 Hz
70.084 Hz
85.061 Hz
74.550 Hz
lines
lines
lines
lines
lines
V. TOTAL
525
509
449
631
667
V. BLK
45
29
49
31
43
V. FP
10
1
12
1
1
V. SYNC
2
3
2
3
3
V. BP
33
25
35
27
39
V. ACTIV
480
480
400
600
624
— SYNC —
INT(G)
NO
NO
NO
NO
NO
EXT(H/V)/POLARITY
YES N/N
YES N/N
YES N/P
YES N/P
YES N/N
EXT(CS)/POLARITY
NO
NO
NO
NO
NO
INT/NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
MODE AT PRODUCTION
MODE 6
MODE 7
MODE 8
MODE 9
RESOLUTION
1024 X 768
1152 X 870
1280 X 1024
1600 X 1200
CLOCK
94.500 MHz
100.000 MHz
135.000 MHz
162.000 MHz
— HORIZONTAL —
H-FREQ
68.677 kHz
68.681 kHz
79.976 kHz
75.000 kHz
usec
usec
usec
usec
H. TOTAL
14.561
14.560
12.504
13.333
H. BLK
3.725
3.040
3.022
3.457
H. FP
0.508
0.320
0.119
0.395
H. SYNC
1.016
1.280
1.067
1.185
H. BP
2.201
1.440
1.837
1.877
H. ACTIV
10.836
11.520
9.481
9.877
— VERTICAL —
V. FREQ(HZ)
84.997 Hz
75.062 Hz
75.025 Hz
60.000 Hz
lines
lines
lines
lines
V. TOTAL
808
915
1066
1250
V. BLK
40
45
42
50
V. FP
1
3
1
1
V. SYNC
3
3
2
3
V. BP
36
39
38
46
V. ACTIV
768
870
1024
1200
— SYNC —
INT(G)
NO
NO
NO
NO
EXT(H/V)/POLARITY
YES P/P
YES N/N
YES P/P
YES P/P
EXT(CS)/POLARITY
NO
NO
NO
NO
INT/NON INT
NON INT
NON INT
NON INT
NON INT
2001.2.23 VER.
HMD-A400
– 5 –
TABLE  OF  CONTENTS
Section
Title
Page
1. GENERAL
.................................................................. 1-1
2. DISASSEMBLY
2-1.
Bucket Assembly Removal ................................. 2-1
2-2.
A Board Removal ................................................ 2-1
2-3.
D Board Removal ................................................ 2-2
2-4.
Service Position .................................................... 2-3
2-5.
H Board Removal ................................................. 2-4
2-6.
Picture Tube Removal .......................................... 2-4
2-7.
Harness Location .................................................. 2-5
3. SAFETY  RELATED  ADJUSTMENT
............. 3-1
4. ADJUSTMENTS
...................................................... 4-1
5. DIAGRAMS
5-1.
Block Diagrams ................................................... 5-1
5-2.
Frame Schematic Diagram .................................. 5-5
5-3.
Circuit Boards Location ...................................... 5-6
5-4.
Schematic Diagrams and Printed Wiring Boards .. 5-7
(1)
Schematic Diagram of H Board ......................... 5-8
(2)
Schematic Diagram of A Board ......................... 5-9
(3)
Schematic Diagrams of
D (a, b, c, d,
 
e,
 
f) Board .................... 5-15
5-5.
Semiconductors .................................................. 5-27
6. EXPLODED  VIEWS
6-1.
Chassis ................................................................. 6-1
6-2.
Picture Tube ........................................................ 6-2
6-3.
Packing Materials ................................................ 6-3
7. ELECTRICAL  PARTS  LIST
............................ 7-1
 
4
 
Precautions
 
Warning on power connections
 
• Use the supplied power cord. If you use a different power cord, 
be sure that it is compatible with your local power supply.
 
For the customers in the U.S.A.
 
If you do not use the appropriate cord, this monitor will not 
conform to mandatory FCC standards.
• Before disconnecting the power cord, wait at least 30 seconds 
after turning off the power to allow the static electricity on the 
screen’s surface to discharge.
• After the power is turned on, the screen is demagnetized 
(degaussed) for about 5 seconds. This generates a strong 
magnetic field around the screen which may affect data stored 
on magnetic tapes and disks placed near the monitor. Be sure to 
keep magnetic recording equipment, tapes, and disks away 
from the monitor.
 
Installation
 
Do not install the monitor in the following places:
• on surfaces (rugs, blankets, etc.) or near materials (curtains, 
draperies, etc.) that may block the ventilation holes
• near heat sources such as radiators or air ducts, or in a place 
subject to direct sunlight
• in a place subject to severe temperature changes
• in a place subject to mechanical vibration or shock
• on an unstable surface
• near equipment which generates magnetism, such as a 
transformer or high voltage power lines
• near or on an electrically charged metal surface
 
Maintenance
 
• Clean the screen with a soft cloth. If you use a glass cleaning 
liquid, do not use any type of cleaner containing an anti-static 
solution or similar additive as this may scratch the screen’s 
coating.
• Do not rub, touch, or tap the surface of the screen with sharp or 
abrasive items such as a ballpoint pen or screwdriver. This type 
of contact may result in a scratched picture tube.
• Clean the cabinet, panel and controls with a soft cloth lightly 
moistened with a mild detergent solution. Do not use any type 
of abrasive pad, scouring powder or solvent, such as alcohol or 
benzene.
 
Transportation
 
When you transport this monitor for repair or shipment, use the 
original carton and packing materials.
 
Use of the stand
 
Insert the supplied stand into the groove to adjust the angle of the 
monitor. You can use the stand in either the vertical or horizontal 
position. If you do not need the stand for this purpose, you can use 
it as a convenient CD rack.
The equipment should be installed near an easily accessible 
outlet.
Example of plug types
for 100 to 120 V AC
SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts 
from the Operating Instruction Manual.  The page numbers of 
the Operating Instruction Manual remein as in the manual.
1-1
 
5
US
 
Identifying parts and controls
 
See the pages in parentheses for further details.
 
1
 
Control button (page 9)
 
The control button is used to display the menu and make 
adjustments to the monitor, including brightness and contrast 
adjustments.
 
2
 
!
 
 (power) switch and indicator (pages 6, 12, 15)
 
This button turns the monitor on and off. The power indicator 
lights up in green when the monitor is turned on, and either 
flashes in green and orange, or lights up in orange when the 
monitor is in power saving mode.
 
3
 
AC IN connector (page 6)
 
This connector provides AC power to the monitor.
 
4
 
Video input connector (HD15) (page 6)
 
This connector inputs RGB video signals (0.700 Vp-p, 
positive) and sync signals.
 
* DDC (Display Data Channel) is a standard of VESA.
 
5
 
USB (universal serial bus) downstream connectors 
(page 7)
 
Use these connectors to link USB peripheral devices to the 
monitor.
 
6
 
USB (universal serial bus) upstream connector 
(page 7)
 
Use this connector to link the monitor to a USB compliant 
computer.
MENU
Rear
Front
 
Pin No.
Signal
 
1
Red
2
Green
3
Blue
4
ID (Ground)
5
DDC Ground*
6
Red Ground
7
Green Ground
8
Blue Ground
9
DDC + 5V*
10
Ground
11
ID (Ground)
12
Bi-Directional Data (SDA)*
13
H. Sync
14
V. Sync
15
Data Clock (SCL)*
1 2
3 4 5
8
7
6
11 12 13 14 15
10
9
1-2
 
6
 
Setup
 
Before using your monitor, check that the following accessories 
are included in your carton:
• Power cord (1)
• USB cable (1)
• Monitor stand (1)
• Warranty card (1)
• Notes on cleaning the screen’s surface (1)
• This instruction manual (1)
 
Step 1: Connect your monitor to 
your computer
 
Turn off the monitor and computer before connecting.
 
Note
 
Do not touch the pins of the video cable connector as this might bend the 
pins.
 
x
 
Connecting to an IBM PC/AT or compatible 
computer
 
x
 
Connecting to a Macintosh or compatible 
computer 
 
Step 2: Connect the power cord
 
With the monitor and computer switched off, first connect the 
power cord to the monitor, then connect it to a power outlet.
 
Step 3: Turn on the monitor and 
computer
 
First turn on the monitor, then turn on the computer.
The installation of your monitor is complete.
If necessary, use the monitor’s controls to adjust the picture.
 
If no picture appears on your screen
 
• Check that the monitor is correctly connected to the computer.
• If NO INPUT SIGNAL appears on the screen, confirm that 
your computer’s graphic board is completely seated in the 
correct bus slot. 
• If you are replacing an old monitor with this model and OUT 
OF SCAN RANGE appears on the screen, reconnect the old 
monitor. Then adjust the computer’s graphic board so that the 
horizontal frequency is between 30 – 86 kHz, and the vertical 
frequency is between 48 – 120 Hz.
For more information about the on-screen messages, see “Trouble 
symptoms and remedies” on page 13.
 
Setup on various OS (Operating System)
 
This monitor complies with the “DDC” Plug & Play standard and 
automatically detects all the monitor’s information. No specific driver 
needs to be installed to the computer.
If you connect the monitor to your PC, and then boot your PC for the first 
time, the setup Wizard may be displayed on the screen. Click on “Next” 
several times according to the instructions from the Wizard until the Plug 
& Play Monitor is automatically selected so that you can use this monitor.
 
For customers using Windows NT4.0
 
Monitor setup in Windows NT4.0 does not use the display driver. Refer 
to the Windows NT4.0 instruction manual for further details on adjusting 
the resolution, refresh rate, and number of colors.
to video output
IBM PC/AT or 
compatible computer
You will need a Macintosh adapter (not supplied).
Macintosh adapter (not supplied)
Macintosh or 
compatible 
computer
to video output
to AC IN
to a power outlet
power cord (supplied)
 
7
US
 
Connecting Universal Serial Bus 
(USB) compliant peripherals
 
Your monitor has one upstream USB connector (on the rear 
panel) and four downstream USB connectors (two on both the left 
and right sides). They provide a fast and easy way to connect USB 
compliant peripheral devices (such as keyboards, mice, printers 
and scanners) to your computer using a standardized USB cable.
To use your monitor as a hub for your peripheral devices, connect 
the USBs as illustrated below.
 
1
 
Turn on the monitor and computer.
 
2
 
Connect your computer to the square upstream 
 
connector using the supplied USB cable.
 
For customers using Windows
 
If a message appears on your screen, follow the on-screen 
instructions and select Generic USB Hub as the default setting.
 
3
 
Connect your USB compliant peripheral devices to 
the rectangular downstream 
 USB connectors.
 
Notes
 
• Not all computers and/or operating systems support USB 
configurations. Check your computer’s instruction manual to see if you 
can connect USB devices.
• In most cases, USB driver software needs to be installed on the host 
computer. Refer to the peripheral device’s instruction manual for 
further details.
• The monitor functions as a USB hub as long as the monitor is either 
“on” or in power saving mode.
• If you connect a keyboard or mouse to the USB connectors and then 
boot your computer for the first time, the peripheral devices may not 
function. First connect the keyboard and mouse directly to the 
computer and set up the USB compliant devices. Then connect them to 
this monitor.
• Do not lean on the monitor when plugging in the USB cables. The 
monitor may suddenly shift and cause injury.
 
Selecting the on-screen menu 
language (LANGUAGE/
INFORMATION)
 
English, French, German, Italian, Spanish, Dutch, Swedish, 
Russian and Japanese versions of the on-screen menus are 
available. The default setting is English.
 
1
 
Press the center of the control button.
 
See page 9 for more information on using the control button.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to highlight 
 LANGUAGE/INFORMATION and press the center 
of the control button again.
 
3
 
Move the control button 
 
m
 
/
 
M
 
 to select 
. Then move 
the control button 
 
<
 
/
 
,
 
 to select a language.
 
• ENGLISH
• FRANÇAIS: French
• DEUTSCH: German
• ITALIANO: Italian
• ESPAÑOL: Spanish
• NEDERLANDS: Dutch
• SVENSKA: Swedish
: Russian
: Japanese 
 
To close the menu
 
Press the center of the control button once to return to the main MENU, 
and twice to return to normal viewing. If no buttons are pressed, the menu 
closes automatically after about 30 seconds.
 
To reset to English
 
See “Resetting the adjustments (RESET)” on page 11.
to USB compliant 
peripheral devices
to a USB compliant 
computer
to USB compliant 
peripheral devices
MENU
EX I T
P I CTURE E F F ECT
S I Z E / CENT ER
GEOME TRY
SCREEN
CONVERGENCE
COLOR
RESE T
SE L ECT
L ANGUAGE / I NFORMA T
N
O
I
MENU
MENU
SVENSKA
ESPAÑOL
NEDER L AN S
D
DEUT SCH
I T A L I ANO
ENGL I SH
FRANÇA I S
SE L ECT
EX I T
LA
A
NG
GE
U
/ I NFORMAT I ON
1-3
 
8
 
Customizing Your Monitor
 
You can make numerous adjustments to your monitor using the 
on-screen menu.
 
Navigating the menu
 
Press the center of the control button to display the main MENU 
on your screen. See page 9 for more information on using the 
control button.
Use the control button to select one of the following menus.
 
x
 
Displaying the current input signal
 
The horizontal and vertical frequencies of the current input signal 
are displayed under the BRIGHTNESS/CONTRAST menu. If the 
signal matches one of this monitor’s factory preset modes, the 
resolution is also displayed.
 
1
 
EXIT
 
Select EXIT to close the menu.
 
2
 
PICTURE EFFECT 
(page 9)
 
Select the PICTURE 
EFFECT menu to choose the 
most appropriate preset 
picture mode.
 
3
 
SIZE/CENTER (page 10)
 
Select the SIZE/CENTER 
menu to adjust the picture’s 
centering, size or zoom.
 
4
 
GEOMETRY (page 10)
 
Select the GEOMETRY 
menu to adjust the picture’s 
rotation and shape.
 
5
 
CONVERGENCE 
(page 10)
 
Select the CONVERGENCE 
menu to adjust the picture’s 
horizontal and vertical 
convergence.
MENU
EX I T
P I CTURE E F F ECT
S I Z E / CENT ER
GEOME TRY
SCREEN
CONVERGENCE
COLOR
RESE T
SE L ECT
L ANGUAGE / I NFORMA T
N
O
I
MENU
SE L ECT
EX I T
DYNAM I C
S T ANDARD
P I CTURE EFFECT
H - C E N T ER
2 6
SE L ECT
EX I T
S I ZE / CENTER
SE L ECT
EX I T
RO T A T I ON
2 6
GEOMETRY
SE L ECT
EX I T
2 6
CONVERGENCE
 
6
 
SCREEN (page 11)
 
Select the SCREEN menu to 
degauss the screen and adjust 
the moire cancellation level.
 
7
 
COLOR (page 11)
 
Select the COLOR menu to 
adjust the picture’s color 
temperature. You can use this 
to match the monitor’s colors 
to a printed picture’s colors.
 
8
 
LANGUAGE/
INFORMATION 
(page 7, 14)
 
Select the LANGUAGE/
INFORMATION menu to 
choose the on-screen menu’s 
language and display this 
monitor’s information box.
 
9
 
RESET (page 11)
 
Select the RESET menu to 
reset the adjustments.
D EGA U S S
ON
SE L ECT
EX I T
SCREEN
K
K
K
R
5 0
G
5 0
B
5 0
SE L ECT
EX I T
COLOR
5000
6500
9300
USER
SVENSKA
ESPAÑOL
NEDER L AN S
D
DEUT SCH
I T A L I ANO
ENGL I SH
FRANÇA I S
SE L ECT
EX I T
LA
A
NG
GE
U
/ I NFORMAT I ON
R E S E T
MOD E
A L L
EX I T
RESET
2 6
2 6
H : 6 8 . 7 k H z
V : 8 5 H z
1 0 2 4 X 7 6 8
BR I GHTNESS / CONTRAST
the horizontal 
and vertical 
frequencies of
the current 
input signal
the resolution 
of the current 
input signal
 
9
US
 
x
 
Using the control button
 
1
 
Display the main MENU.
 
Press the center of the control button to display the main 
MENU on your screen.
 
2
 
Select the menu you want to adjust.
 
Highlight the desired menu by moving the control button up 
(
 
M
 
), down (
 
m
 
), and left (
 
<
 
) or right (
 
,
 
).
 
3
 
Adjust the menu.
 
Move the control button left (
 
<
 
) or right (
 
,
 
) to make the 
adjustment.
 
4
 
Close the menu.
 
Press the center of the control button once to return to the 
main MENU, and twice to return to normal viewing. If no 
buttons are pressed, the menu closes automatically after about 
30 seconds.
 
x
 
Resetting the adjustments
 
You can reset the adjustments using the RESET menu. See 
page 11 for more information on resetting the adjustments.
 
Adjusting the brightness and 
contrast
 
Brightness and contrast adjustments are made using a separate 
BRIGHTNESS/CONTRAST menu.
These settings are stored in memory for all input signals.
 
1
 
Move the control button in any direction.
 
The BRIGHTNESS/CONTRAST menu appears on the 
screen.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to adjust the 
brightness (
), and 
 
<
 
/
 
,
 
 to adjust the contrast 
(
 
6
 
).
 
The menu automatically disappears after about 3 seconds.
 
Adjusting the picture quality 
(PICTURE EFFECT)
 
The PICTURE EFFECT feature allows you to select the most 
appropriate picture mode from among two preset modes 
maximum performance.
 
1
 
Press the center of the control button.
 
The main MENU appears on the screen.
 
2
 
Move the control button to highlight PICTURE 
EFFECT and press the center of the control button 
again .
 
The PICTURE EFFECT menu appears on the screen.
 
3
 
Move the control button 
 
m
 
/
 
M
 
 to select the desired 
picture mode.
MENU
MENU
MENU
MENU
MENU
 
Select
For
 
STANDARD
 
images with high contrast and 
brightness. Choose this mode for 
commonly used applications, such as 
spreadsheets, word processing, 
E-mail, or WEB surfing.
 
DYNAMIC
 
extremely vivid and photo-realistic 
images. Brighter than “STANDARD” 
mode, choose this for intense graphic 
applications such as games, DVD 
playback, or entertainment software.
2 6
2 6
H : 6 8 . 7 k H z
V : 8 5 H z
1 0 2 4 X 7 6 8
BR I GHTNESS / CONTRAST
1-4
 
10
 
Adjusting the centering of the 
picture (CENTER)
 
This setting is stored in memory for the current input signal.
 
1
 
Press the center of the control button.
 
The main MENU appears on the screen.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to highlight 
 SIZE/
CENTER and press the center of the control button 
again.
 
The SIZE/CENTER menu appears on the screen.
 
3
 
First move the control button 
 
m
 
/
 
M
 
 to select 
 (H-CENTER) for horizontal adjustment, or 
 (V-CENTER) for vertical adjustment. Then move 
the control button 
 
<
 
/
 
,
 
 to adjust the centering.
 
Adjusting the size of the picture 
(SIZE)
 
This setting is stored in memory for the current input signal.
 
1
 
Press the center of the control button.
 
The main MENU appears on the screen.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to highlight 
 SIZE/
CENTER and press the center of the control button 
again.
 
The SIZE/CENTER menu appears on the screen.
 
3
 
First move the control button 
 
m
 
/
 
M
 
 to select 
 (H-SIZE) for horizontal adjustment, or 
 (V-SIZE) for vertical adjustment. Then move the 
control button 
 
<
 
/
 
,
 
 to adjust the size.
 
Enlarging or reducing the picture 
(ZOOM)
 
This setting is stored in memory for the current input signal.
 
1
 
Press the center of the control button.
 
The main MENU appears on the screen.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to highlight 
 SIZE/
CENTER and press the center of the control button 
again.
 
The SIZE/CENTER menu appears on the screen.
 
3
 
Move the control button 
 
m
 
/
 
M
 
 to select 
 (ZOOM), 
and move 
 
<
 
/
 
,
 
 to enlarge or reduce the picture.
 
Adjusting the shape of the picture 
(GEOMETRY)
 
The GEOMETRY settings allow you to adjust the rotation and 
shape of the picture.
The 
 (ROTATION) setting is stored in memory for all input 
signals. All other settings are stored in memory for the current 
input signal.
 
1
 
Press the center of the control button.
 
The main MENU appears on the screen.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to highlight 
 
GEOMETRY and press the center of the control 
button again.
 
The GEOMETRY menu appears on the screen.
 
3
 
First move the control button 
 
m
 
/
 
M
 
 to select the 
desired adjustment item. Then move the control 
button 
 
<
 
/
 
,
 
 to make the adjustment.
 
Adjusting the convergence 
(CONVERGENCE)
 
The CONVERGENCE settings allow you to adjust the quality of 
the picture by controlling the convergence. The convergence 
refers to the alignment of the red, green, and blue color signals.
If you see red or blue shadows around letters or lines, adjust the 
convergence.
These settings are stored in memory for all input signals.
 
1
 
Press the center of the control button.
 
The main MENU appears on the screen.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to highlight 
 
CONVERGENCE and press the control button again.
 
The CONVERGENCE menu appears on the screen.
 
3
 
First move the control button 
 
m
 
/
 
M
 
 to select the 
desired adjustment item. Then move the control 
button 
 
<
 
/
 
,
 
 to make the adjustment.
 
Select
To 
 
 (ROTATION)
rotate the picture
 (PIN)
expand or contract the picture sides
 (PIN BALANCE)
shift the picture sides to the left or 
right
 (KEY)
adjust the picture width at the top of 
the screen
 (KEY BALANCE) shift the picture to the left or right at 
the top of the screen
 
Select
To
 
 
horizontally shift red or blue shadows
 
 
 
vertically shift red or blue shadows
 
11
US
 
Adjusting the color of the picture 
(COLOR)
 
The COLOR settings allow you to adjust the picture’s color 
temperature by changing the color level of the white color field. 
Colors appear reddish if the temperature is low, and bluish if the 
temperature is high. This adjustment is useful for matching the 
monitor’s colors to a printed picture’s colors.
This setting is stored in memory for all input signals.
 
1
 
Press the center of the control button.
 
The main MENU appears on the screen.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to highlight 
 COLOR 
and press the center of the control button again.
 
The COLOR menu appears on the screen.
 
3
 
Move the control button 
 
<
 
/
 
,
 
 to select a color 
temperature.
 
The preset color temperatures are 5000K, 6500K, and 9300K. 
Since the default setting is 9300K, the whites will change 
from a bluish hue to a reddish hue as the temperature is 
lowered to 6500K and 5000K.
 
4
 
If necessary, fine tune the color temperature.
 
First move the control button 
 
<
 
/
 
,
 
 to select USER. Then 
move the control button 
 
m
 
/
 
M
 
 to select R (red), G (green), or 
B (blue) and move the control button 
 
<
 
/
 
,
 
 to make the 
adjustment.
If you fine tune the color temperature, the new color settings 
are stored in memory and recalled whenever you select 
USER.
 
Additional settings (SCREEN)
 
You can manually degauss (demagnetize) the screen, and adjust 
the moire cancellation level.
 
1
 
Press the center of the control button.
 
The main MENU appears on the screen.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to highlight 
 
SCREEN and press the center of the control button 
again.
 
The SCREEN menu appears on the screen.
 
3
 
Move the control button 
 
m
 
/
 
M
 
 to select the desired 
adjustment item.
 
Adjust the selected item according to the following 
instructions.
 
x
 
Degaussing the screen
 
The monitor is automatically demagnetized when the power is 
turned on.
 
To manually degauss the monitor, first move the 
control button 
 
m
 
/
 
M
 
 to select 
 (DEGAUSS). Then move 
the control button 
 
,
 
.
 
The screen is degaussed for about 5 seconds. If a second degauss 
cycle is needed, allow a minimum interval of 20 minutes for the 
best result.
 
x
 
Adjusting the moire
 
*
 
If elliptical or wavy patterns appear on the screen, adjust the moire 
cancellation level.
 
To adjust the amount of moire cancellation, first move 
the control button 
 
m
 
/
 
M
 
 to select 
 (CANCEL MOIRE). 
Then move the control button 
 
<
 
/
 
,
 
 until the moire 
effect is at a minimum. 
 
* Moire is a type of natural interference which produces soft, wavy lines 
on your screen. It may appear due to interference between the pattern 
of the picture on the screen and the phosphor pitch pattern of the 
monitor.
 
Resetting the adjustments 
(RESET)
 
This monitor has the following two reset methods. Use the 
RESET menu to reset the adjustments.
 
1
 
Press the center of the control button.
 
The main MENU appears on the screen.
 
2
 
Move the control button 
 
m
 
/
 
M
 
 to highlight 
 
0
 
 RESET 
and press the center fo the control button again.
 
The RESET menu appears on the screen.
Reset the settings according to the following instructions.
 
Resetting all of the adjustment data for the 
current input signal (MODE)
 
Move the control button 
 
<
 
 
The MODE item is selected. All of the adjustment data for the 
current input signal is reset. 
Note that the following items are not reset by this method.
• on-screen menu language (page 7)
• picture’s rotation (page 10)
 
Resetting all of the adjustment data to factory 
preset levels (ALL)
 
Move the control button 
 
,
 
 
The ALL item is selected. All of the adjustment data for the 
current input signal is reset. All of the adjustment data (except for 
the USER settings in the COLOR menu) is reset to the factory 
preset levels.
 
Note
 
The monitor
 
 
s buttons will not operate for about 5 seconds when ALL is 
selected.
K
K
K
R
5 0
G
5 0
B
5 0
SE L ECT
EX I T
COLOR
5000
6500
9300
USER
MENU
Example of moire
1-5
 
12
 
Technical Features
 
Preset and user modes
 
When the monitor receives an input signal, it automatically 
matches the signal to one of the factory preset modes stored in the 
monitor’s memory to provide a high quality picture at the center of 
the screen. (See Appendix for a list of the factory preset modes.) 
For input signals that do not match one of the factory preset 
modes, the digital Multiscan technology of this monitor ensures 
that a clear picture appears on the screen for any timing in the 
monitor’s frequency range (horizontal: 30 – 86 kHz, vertical: 48 – 
120 Hz). If the picture is adjusted, the adjustment data is stored as 
a user mode and automatically recalled whenever the same input 
signal is received.
 
Note for Windows users
 
For Windows users, check your video board manual or the utility 
program which comes with your graphic board and select the 
highest available refresh rate to maximize monitor performance.
 
Power saving function
 
This monitor meets the power-saving guidelines set by VESA, 
 
E
 
NERGY 
 
S
 
TAR, and NUTEK. If no signal is received by the 
monitor from the connected computer, the monitor will 
automatically reduce power consumption as shown below.
 
*
Figures reflect power consumption when no USB compatible 
peripherals are connected to the monitor.
** When your computer enters the “active off” mode, the input signal is 
cut and NO INPUT SIGNAL appears on the screen. After 20 seconds, 
the monitor enters the power saving mode.
 
Troubleshooting
 
Before contacting technical support, refer to this section.
 
If thin lines appear on your screen 
(damper wires)
 
The visible lines on your screen especially when the background 
screen color is light (usually white), are normal for the Trinitron 
monitor. This is not a malfunction. These are shadows from the 
damper wires used to stabilize the aperture grille. The aperture 
grille is the essential element that makes a Trinitron picture tube 
unique by allowing more light to reach the screen, resulting in a 
brighter, more detailed picture.
 
On-screen messages
 
If there is something wrong with the input signal, one of the 
following messages appears on the screen. To solve the problem, 
see “Trouble symptoms and remedies” on page 13.
 
The input signal condition
OUT OF SCAN RANGE
 
indicates that the input signal is not supported by the 
monitor’s specifications.
 
NO INPUT SIGNAL
 
indicates that no signal is being input to the monitor.
 
Power mode
Power 
consumption
 
*
 
!
 
 (power) 
indicator
 
normal 
operation
 
 
 150 W
green
active off**
 
 
 3 W
orange
power off
0 W
off
Damper wires
INFORMATION
OUT  OF  SCAN  RANGE
Input signal condition
 
13
US
 
Trouble symptoms and remedies
 
If the problem is caused by the connected computer or other equipment, please refer to the connected equipment’s instruction manual.
Use the self-diagnosis function (page 15) if the following recommendations do not resolve the problem.
 
Symptom
Check these items
No picture
 
If the 
 
!
 
 (power) indicator is not lit
• Check that the power cord is properly connected.
• Check that the 
 
!
 
 (power) switch is in the “on” position.
If the NO INPUT SIGNAL message 
appears on the screen, or if the 
 
!
 
 
(power) indicator is orange
• Check that the video signal cable is properly connected and all plugs are firmly seated in 
their sockets (page 6).
• Check that the HD15 video input connector’s pins are not bent or pushed in.
 
x
 
Problems caused by the connected computer or other equipment
 
• The computer is in power saving mode. Try pressing any key on the computer keyboard or 
moving the mouse.
• Check that the computer’s power is “on.”
• Check that the graphic board is completely seated in the proper bus slot.
If the OUT OF SCAN RANGE 
message appears on the screen
 
x
 
Problems caused by the connected computer or other equipment
 
• Check that the video frequency range is within that specified for the monitor. If you 
replaced an old monitor with this monitor, reconnect the old monitor and adjust the 
frequency range to the following.
Horizontal: 30 – 86 kHz
Vertical: 48 – 120 Hz
If no message is displayed and the 
 
!
 
 
(power) indicator is green or flashing 
orange
• Use the Self-diagnosis function (page 15).
If using a Macintosh system
• Check that the Macintosh adapter (not supplied) and the video signal cable are properly 
connected (page 6).
 
Picture flickers, bounces, 
oscillates, or is scrambled
 
• Isolate and eliminate any potential sources of electric or magnetic fields such as other 
monitors, laser printers, electric fans, fluorescent lighting, or televisions.
• Move the monitor away from power lines or place a magnetic shield near the monitor.
• Try plugging the monitor into a different AC outlet, preferably on a different circuit.
• Try turning the monitor 90
 
°
 
 to the left or right.
 
x
 
Problems caused by the connected computer or other equipment
 
• Check your graphics board manual for the proper monitor setting.
• Confirm that the graphics mode (VESA, etc.) and the frequency of the input signal are 
supported by this monitor (Appendix). Even if the frequency is within the proper range, 
some video boards may have a sync pulse that is too narrow for the monitor to sync 
correctly.
• Adjust the computer’s refresh rate (vertical frequency) to obtain the best possible picture.
 
Picture is fuzzy
 
• Adjust the brightness and contrast (page 9).
• Degauss the monitor* (page 11).
• Select CANCEL MOIRE and adjust the moire cancellation effect (page 11).
 
Picture is ghosting
 
• Eliminate the use of video cable extensions and/or video switch boxes.
• Check that all plugs are firmly seated in their sockets.
 
Picture is not centered or sized 
properly
 
• Adjust the size (page 10) or centering (page 10). Note that some video modes do not fill 
the screen to the edges.
 
Edges of the image are curved
 
• Adjust the geometry (page 10).
 
Wavy or elliptical pattern (moire) 
is visible
 
• Select CANCEL MOIRE and adjust the moire cancellation effect (page 11).
 
x
 
Problems caused by the connected computer or other equipment
 
• Change your desktop pattern.
(continued)

Download Sony HMD-A400 Service Manual (Repair Manual)

Here you can view online and download Sony HMD-A400 Service Manual in PDF. HMD-A400 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HMD-A400 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.